Based on the response on the infographics for an upper half pose and a sitting pose, I’m creating another infographic on specific posing for the face and what you should pay attention to. Lots of people don’t know very much about posing, and what you should understand is that the face is what many people pay attention to.
As a general guide, this infographic will help you with a lot of the issues involving not knowing what to do. Specific creative visions may also apply, but this is a great starting point.